//
//  HYVisitorView.swift
//  weibo-dg
//
//  Created by 源 何 on 16/9/24.
//  Copyright © 2016年 何源. All rights reserved.
//

import UIKit

/// 访客视图
class HYVisitorView: UIView {
    
    //访客视图的信息字典
    //如果是首页 imageView == ""
    //MARK: - 设置访客视图
    /// 使用字典设置访客视图的信息
    ///
    /// - parameter dict: [imageName / message]
    //提示: 如果是首页 imageView == ""
    var visitorInfo: [String: String]? {
        didSet{
            //1.取字典信息
            guard let imageName = visitorInfo?["imageName"],
                let message = visitorInfo?["message"] else {
                    return
            }
            //2.设置消息
            tipLabel.text = message
            //3.设置图像 首页不需要设置
            if imageName == "" {
                startAnimation()
                return
            }
            iconView.image = UIImage(named: imageName)
            
            //其他控制器的访客视图不需要显示小房子/遮罩视图
            houseIconView.isHidden = true
            maskIconView.isHidden = true
        }
    }
    //MARK: - 构造函数
    override init(frame: CGRect) {
        super.init(frame: frame)
        
        setupUI()
    }
    
    required init?(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    
    //旋转图标动画
    func startAnimation() {
        let anim = CABasicAnimation(keyPath: "transform.rotation")
        anim.toValue = M_PI * 2
        anim.repeatCount = MAXFLOAT
        anim.duration = 15
        
        //在设置连续播放的动画非常有用
        anim.isRemovedOnCompletion = false
        
        //添加到图层
        iconView.layer.add(anim, forKey: nil)
    }

    //MARK: - 私有控件
    // 图像视图
    lazy var iconView = UIImageView(image: UIImage(named: "visitordiscover_feed_image_smallicon"))
    // 小房子
    lazy var houseIconView = UIImageView(image: UIImage(named: "visitordiscover_feed_image_house"))
    // 提示标签
    lazy var tipLabel : UILabel = UILabel.cz_label(
        withText: "关注一些人,回这里看看有什么惊喜关注一些人,回这里看看有什么惊喜",
        fontSize: 14,
        color: UIColor.darkGray)
    //遮罩图像
    lazy var maskIconView = UIImageView(image: UIImage(named: "visitordiscover_feed_mask_smallicon"))
    
    // 注册按钮
    lazy var regisitorBtn: UIButton = UIButton.cz_textButton(
        "注册",
        fontSize: 16,
        normalColor: UIColor.orange,
        highlightedColor: UIColor.black,
        backgroundImageName: "common_button_white_disable")
    // 登录按钮
    lazy var loginBtn: UIButton = UIButton.cz_textButton(
        "登录",
        fontSize: 16,
        normalColor: UIColor.darkGray,
        highlightedColor: UIColor.black,
        backgroundImageName: "common_button_white_disable")
}

// MARK: - 设置界面
extension HYVisitorView {
    
    func setupUI() {
        
        backgroundColor = UIColor.cz_color(withHex: 0xEDEDED)
        
        tipLabel.textAlignment = .center
        
        // 1. 添加控件
        addSubview(iconView)
        addSubview(maskIconView)
        addSubview(houseIconView)
        addSubview(tipLabel)
        addSubview(regisitorBtn)
        addSubview(loginBtn)
        
        // 2. 取消 autoresizing
        for v in subviews {
            v.translatesAutoresizingMaskIntoConstraints = false
        }
        
        // 3. 自动布局
        let margin: CGFloat = 20.0
        // 1> 圈圈
        addConstraint(NSLayoutConstraint(item: iconView,
                                         attribute: .centerX,
                                         relatedBy: .equal,
                                         toItem: self,
                                         attribute: .centerX,
                                         multiplier: 1.0,
                                         constant: 0))
        addConstraint(NSLayoutConstraint(item: iconView,
                                         attribute: .centerY,
                                         relatedBy: .equal,
                                         toItem: self,
                                         attribute: .centerY,
                                         multiplier: 1.0,
                                         constant: -60))
        // 2> 房子
        addConstraint(NSLayoutConstraint(item: houseIconView,
                                         attribute: .centerX,
                                         relatedBy: .equal,
                                         toItem: iconView,
                                         attribute: .centerX,
                                         multiplier: 1.0,
                                         constant: 0))
        addConstraint(NSLayoutConstraint(item: houseIconView,
                                         attribute: .centerY,
                                         relatedBy: .equal,
                                         toItem: iconView,
                                         attribute: .centerY,
                                         multiplier: 1.0,
                                         constant: 0))
        // 3> 提示标签
        addConstraint(NSLayoutConstraint(item: tipLabel,
                                         attribute: .centerX,
                                         relatedBy: .equal,
                                         toItem: iconView,
                                         attribute: .centerX,
                                         multiplier: 1.0,
                                         constant: 0))
        addConstraint(NSLayoutConstraint(item: tipLabel,
                                         attribute: .top,
                                         relatedBy: .equal,
                                         toItem: iconView,
                                         attribute: .bottom,
                                         multiplier: 1.0,
                                         constant: margin))
        addConstraint(NSLayoutConstraint(item: tipLabel,
                                         attribute: .width,
                                         relatedBy: .equal,
                                         toItem: nil,
                                         attribute: .notAnAttribute,
                                         multiplier: 1.0,
                                         constant: 236))
        // 4> 注册按钮
        addConstraint(NSLayoutConstraint(item: regisitorBtn,
                                         attribute: .left,
                                         relatedBy: .equal,
                                         toItem: tipLabel,
                                         attribute: .left,
                                         multiplier: 1.0,
                                         constant: 0))
        addConstraint(NSLayoutConstraint(item: regisitorBtn,
                                         attribute: .top,
                                         relatedBy: .equal,
                                         toItem: tipLabel,
                                         attribute: .bottom,
                                         multiplier: 1.0,
                                         constant: margin))
        addConstraint(NSLayoutConstraint(item: regisitorBtn,
                                         attribute: .width,
                                         relatedBy: .equal,
                                         toItem: nil,
                                         attribute: .notAnAttribute,
                                         multiplier: 1.0,
                                         constant: 100))
        // 5> 登录按钮
        addConstraint(NSLayoutConstraint(item: loginBtn,
                                         attribute: .right,
                                         relatedBy: .equal,
                                         toItem: tipLabel,
                                         attribute: .right,
                                         multiplier: 1.0,
                                         constant: 0))
        addConstraint(NSLayoutConstraint(item: loginBtn,
                                         attribute: .top,
                                         relatedBy: .equal,
                                         toItem: tipLabel,
                                         attribute: .bottom,
                                         multiplier: 1.0,
                                         constant: margin))
        addConstraint(NSLayoutConstraint(item: loginBtn,
                                         attribute: .width,
                                         relatedBy: .equal,
                                         toItem: nil,
                                         attribute: .notAnAttribute,
                                         multiplier: 1.0,
                                         constant: 100))
        // 6> 遮罩
        //views 定义 VFL 中的控件名称和实际名称的映射关系
        //metrics: 定义 VFL 中() 指定的常数映射关系
        let viewDict = ["maskIconView": maskIconView,
                        "regisitorBtn":regisitorBtn] as [String : Any]
        let metrics = ["metrics": -35]
        addConstraints(NSLayoutConstraint.constraints(
            withVisualFormat: "H:|-0-[maskIconView]-0-|",
            options: [],
            metrics: nil,
            views: viewDict))
        addConstraints(NSLayoutConstraint.constraints(
            withVisualFormat: "V:|-0-[maskIconView]-(metrics)-[regisitorBtn]",
            options: [],
            metrics: metrics,
            views: viewDict))
    }
}
